severity; strictness; intensity
The quality of being strict, severe, or intense. Used for rules, people, conditions, and natural phenomena.
I was surprised by the strictness of this school's rules.
冬の寒さの厳しさは想像以上だった。
The severity of the winter cold was beyond imagination.
He endured the severity of the training.
I really felt the harshness of the entrance exams.